Ractopamine hydrochloride (LY031537) is a potent and orally active beta-adrenergic receptor (betaAR) agonist with Kd value of ~25 nM for pig beta1AR and beta2AR. Ractopamine hydrochloride also is a mTAAR1 agonist with an EC50 of 16 µM. Ractopamine hydrochloride promotes muscle mass development, limits fat deposition, reduces feed consumption, increases total cellular protein synthesis, and improves growth rate and feed efficiency in finishing swine. Ractopamine hydrochloride can be used for researching to increase lean tissue growth and improve production efficiency in pigs[1][2][3][4][5].
